win32: add missing definition of _ERROR_NO_MORE_FILES caught by pyflakes

mercurial/win32.py

@@ -24,6 +24,7 b' import ctypes, errno, os, subprocess, ra'
 
 # GetLastError
 _ERROR_SUCCESS = 0
+_ERROR_NO_MORE_FILES = 18
 _ERROR_SHARING_VIOLATION = 32
 _ERROR_INVALID_PARAMETER = 87
 _ERROR_INSUFFICIENT_BUFFER = 122